True Pan vs GSDSP Quantum Delay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
True Pan
This audio plugin allows for lossless repositioning of stereo recordings, preserving the stereo field's geometry. It enables fully reversible panoramic rotations without compressing the stereo image and supports advanced transformations and modulation effects for creative sound design.
- Lossless stereo field repositioning
- Fully reversible panoramic rotations
- Advanced transformations and modulation
- Preserves spatial information in ambience/reverb
- Tempo-synced LFOs for rhythmic motion
- Dynamic stereo spread controls
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True Pan makes it possible to reposition stereo recordings while perfectly preserving the geometry of the stereo field. This allows for lossless, fully reversible panoramic rotations that don't compress the stereo image. The plugin also supports more intense transformations and modulation effects. True Pan can be used to: • Pan sounds that are rich in ambience or reverb without diminishing spatial information • Adjust stereo field recordings, freely rotate the entire sound field (e.g. to change what's in front) • Easily shift sonic perspectives of fx-rich, layered stereo instrument patches • Explore a new dimension of positional reverberation • Add subtle motion to, or "liven up" omnidirectional sounds (can also be used as a special chorus effect at higher rates) • Add a dynamic spatial quality to arpeggiated or rhythmic passages using the tempo sync feature with different LFO types • Apply stronger modulation for sound design and creative uses (creating warble, flutter or stereo tremolo and glitch effects) • Aid and speed up workflows for multi-mic setups When used as a post-processor for reverbs, True Pan can provide higher temporal density and smoothness than what pre-panned reverb inputs would allow. This directly translates to a better quality, but can also be viewed as a different physical setup of the sound source and the listener in relationship to the boundaries of the acoustic space. Thus it opens up additional degrees of freedom in positioning. The plugin's approach to quality preservation is best demonstrated by its ability to transform processed audio back to its original state, by applying a reverse rotation. The included stereo spread controls incorporate features that aim to minimize volume fluctuations by adapting to the actual input signal and its M/S gain distribution, including a fully dynamic adaptive mode, and a snapshot-based one. PLEASE NOTE: • An Audio Unit v3 compatible host app is required to use this plugin • Dual mono inputs from two microphones need to be converted to a single stereo signal in order to be processable
GSDSP Quantum Delay
This app offers a vintage-inspired stereo delay effect with advanced modulation, flexible filtering, and precise timing controls. It allows users to sculpt unique echo textures, from warm analog sounds to complex, evolving soundscapes.
- Vintage-inspired stereo delay
- Deep modulation system
- Flexible filtering (LPF, HPF, BPF)
- Precise timing controls (BPM, ms)
- Switchable stereo/dual mono modes
- Advanced modulation sources (LFO, Random, Envelope)
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A vintage-inspired delay supercharged with deep modulation, flexible filtering, and creative timing that pushes echoes into new dimensions. Classic Delay, Reinvented Quantum Delay takes the charm of a vintage stereo delay and fuses it with our next-level modulation system. Switch between the warm character of Tape mode and the pristine clarity of Fade mode, lock to BPM (including 5-tuplets) or dial in precise times in milliseconds. Use the Fine control for subtle push-and-pull micro-timing — or modulate your delay lines in ways traditional delays could only dream of. Sculpted Echoes Shape your repeats with switchable lowpass, highpass, and bandpass filters placed directly in the feedback path. Add modulation to create evolving tones, gentle movement, or drifting, frequency-shifting echoes. From warm analog-style rolls to shimmering, swirling textures, it’s all there. Feedback with Precision Control your delay tail behavior using either traditional % feedback or our modern dB-per-second decay system — ideal for predictable, musical decay even when the feedback path becomes complex. Enable Crossfeed for classic ping-pong stereo bounce, or push into Over-Feedback to create dense, self-building echoes that drift toward infinity. Stereo or Dual Mono Every section of Quantum Delay — delay, filter, and feedback — can switch between stereo and dual mono modes. Create tight, controlled stereo images or break them apart for wide, offset, unpredictable spaces. Dual mono modulation unlocks complex stereo interplay and beautifully asymmetric echoes. Modulation Without Limits Quantum Delay integrates our advanced modulation system, letting you modulate nearly anything: delay time, filters, feedback parameters, stereo controls, and more. Use LFOs, Random Generators, 2D modulators, Envelope Followers, Macros, and even chaotic systems to push your echoes far beyond traditional delay behavior. Or use our parameter randomisation feature to explore the plugin’s sound at random. Quantum Delay is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products
Screenshots
Verdict
The clearest difference is price: True Pan at $4.99 against GSDSP Quantum Delay's $14.99. True Pan also leads on rating (5.0 vs 4.8). GSDSP Quantum Delay's advantage is update cadence (every 5 weeks vs every 17 months). On review sentiment, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
True Pan costs $4.99 and GSDSP Quantum Delay $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
True Pan holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 7 and 17 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
True Pan ships an update every 17 months, GSDSP Quantum Delay every 5 weeks. The most recent releases landed on August 29, 2026 and September 22, 2026 respectively.
| Parameter | True Pan | GSDSP Quantum Delay |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 5.0 (7 ratings) — better | 4.8 (17 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 | 17 — better |
| Update frequency | Every 17 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | quantovox | Gustav Scholda |
Customer experience
True Pan
GSDSP Quantum Delay
In-app purchases
True Pan
No in-app purchases
GSDSP Quantum Delay
No in-app purchases









